Home / 65,831.16-90,810.06-40,349.88

Finding the Fourth Proportional to 65,831.16, 90,810.06 and 40,349.88

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Solution

The fourth proportional to 65,831.16, 90,810.06 and 40,349.88 is: 55,660.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,831.16 : 90,810.06 = 40,349.88 : x
  2. Step 2: Convert to fraction form
    65,831.16/90,810.06 = 40,349.88/x
  3. Step 3: Cross multiply
    65,831.16x = 90,810.06 × 40,349.88
  4. Step 4: Simplify right side
    65,831.16x = 3,664,175,023.79
  5. Step 5: Solve for x
    x = 3,664,175,023.79/65,831.16
  6. Step 6: Final answer
    x = 55,660.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.